Allow butter, eggs, sour cream, and Bailey's to stand at room temperature 30 min.
Combine flour, baking powder, and baking soda; set aside.
In a medium mixing bowl beat butter on medium-high speed 30 seconds.
Gradually add sugar, beating approx. 10 minutes or until light and fluffy.
Add eggs, one at a time, beating 1 minute after each addition.
Combine sour cream and Bailey's; stir well. Add dry mixture and sour cream mixture alternately to beaten mixture, beating after each addition until just combined.
Stir in chocolate chips.
Pour batter into greased and floured loaf pan.
Bake at 325 degrees for 60-70 minutes or until a wooden toothpick comes out clean.
Cool on a rack for 10 minutes; remove from pan and cool completely.
